摘要
对在北京一所小学建立的跨季节蓄热太阳能-土壤复合热泵系统进行为期约一年的试验研究,重点分析太阳能集热系统的运行特性和土壤蓄放热效果,以及二者联合运行时对土壤热平衡的影响。结果表明,在现有运行策略下,太阳能蓄热水箱在过渡季、供热季和制冷季的进、出水温度呈现出不同的变化规律。试验期间,太阳能集热系统的净蓄热量为44 909.02 MJ。二者联合运行工况下,土壤吸排热的不平衡率由单一土壤源热泵的77.95%降低为67.69%,采用太阳能跨季节蓄热可以补充一部分热量,但无法完全解决土壤的热平衡问题,这是由本系统夏季实际运行时间过短、冬季实际运行时间过长造成的。
The experimental study on the solar-soil composite heat pump system with cross-seasonal heat storage in a primary school in Beijing is carried out for one year. The experiment mainly focuses on the operational characteristics of solar collecting system and the effects of absorption and emission heat of soil, and the impacts on soil heat balance when these two systems work together. The results show that the temperatures of the inlet and outlet water of solar storage tank show different variation rules during the transi- tion season, heating season and refrigeration season under the existing operating strategies. The net heat storage capacity of the solar collector system is 44 909.02 MJ during the experimental period. Under the combined operation conditions, the imbalance rate of absorption and emission heat of soil is reduced from 77.95% when using single source heat pump to 67.69-. Although the cross-seasonal system could make up the thermal imbalance to a certain degree, it still cannot solve the problem completely, resulted from that the system＇s running time in summer is too short, and too long in winter.
作者
李永
句德胜
万光宇
何世人
刘伟斌
吴艳元
Li Yong;Ju Desheng;Wan Guangyu;He Shiren;Liu Weibin;Wu Yanyuan(Hebei Institute of Building Science and Technology Co., Ltd.;College of Civil Engineering ＆ Mechanics, Yanshan University;Tianpu New Energy Co., Ltd.)
出处
《制冷与空调》
2018年第9期54-59,41,共7页
Refrigeration and Air-Conditioning
关键词
土壤源热泵
太阳能
跨季节蓄热
复合热泵
试验
soil source heat pump
solar energy
cross-seasonal heat storage
composite heat pump
experiment
